Zobrazeno 1 - 10
of 312
pro vyhledávání: '"F. J. Rachford"'
Autor:
Thomas L. Carroll, F. J. Rachford
Publikováno v:
IET Radar, Sonar & Navigation. 7:255-260
The authors use an acoustic experiment to test a method for identifying radar or sonar targets based on information from the target's impulse response function. The new algorithm uses a long modulated pulse of relatively low resolution. Using concept
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2284274928216eb4134e5b77b75f9808
https://doi.org/10.1049/iet-rsn.2012.0194
https://doi.org/10.1049/iet-rsn.2012.0194
Autor:
Thomas L. Carroll, F. J. Rachford
Publikováno v:
PIERS Online. 6:476-479
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9704343bd711d94cc14a724ea79dcaae
https://doi.org/10.2529/piers091216170610
https://doi.org/10.2529/piers091216170610
Autor:
Patanjali V. Parimi, Yongxue He, Peng He, Carmine Vittoria, Vincent G. Harris, S. D. Yoon, F. J. Rachford
Publikováno v:
Journal of Magnetism and Magnetic Materials. 313:187-191
A magnetic field tunable, broadband, low-loss, negative refractive index metamaterial is fabricated using yttrium iron garnet (YIG) and a periodic array of copper wires. The tunability is demonstrated from 18 to 23 GHz under an applied magnetic field
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4af7fc4911531ae11dcd2780519168b6
https://doi.org/10.1016/j.jmmm.2006.12.031
https://doi.org/10.1016/j.jmmm.2006.12.031
Autor:
F. J. Rachford, Thomas L. Carroll
Publikováno v:
2014 IEEE Radar Conference.
A signal reflected from a radar target is modified according to the impulse response function of the target. This interaction may be thought of as a linear filter acting on the incident signal. Filters are not exactly invertible, which means that the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38c015781ead2abdaf7f2584e94e3904
https://doi.org/10.1109/radar.2014.6875550
https://doi.org/10.1109/radar.2014.6875550
Autor:
Thomas L. Carroll, F. J. Rachford
Publikováno v:
Understanding Complex Systems ISBN: 9783319029245
The response of a radar or sonar target to a signal may be described by an impulse response function, which means that the target may be considered as a filter acting on a signal. It is known that filters are not exactly invertible, and this lack of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e55f63ce1ce4a362956c24b40c46613
https://doi.org/10.1007/978-3-319-02925-2_20
https://doi.org/10.1007/978-3-319-02925-2_20
Publikováno v:
Journal of Applied Physics. 80:1878-1882
We study experimentally the behavior of magnetostatic wave modes in a rectangular yttrium–iron–garnet film placed in an in‐plane magnetic field and subject to multiple drive excitations. Patterned slotlines and coplanar waveguides are used to d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1aef8a78dc4f89a13b3279486df56302
https://doi.org/10.1063/1.363001
https://doi.org/10.1063/1.363001
Autor:
F. J. Rachford, Thomas L. Carroll
Publikováno v:
Chaos: An Interdisciplinary Journal of Nonlinear Science. 26:103104
There have been many attempts to apply chaotic signals to communications or radar, but one obstacle has been that there is no effective way to recover chaotic signals from noise larger than the signal. In this work, we create "pseudo-chaotic" signals
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a21d813876f07793c89efc11a0ed9ab6
https://doi.org/10.1063/1.4964348
https://doi.org/10.1063/1.4964348
Publikováno v:
Journal of Applied Physics. 93:8283-8285
The ferromagnetic resonance properties of thin polycrystalline layers in the sequence Cu/Fe/Cu/Fe/Cu, grown on Si wafers, were studied. Fe grown on Cu can have a very narrow ferromagnetic resonance (FMR) linewidth. Similar structures are of interest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddf10e4fd580d569d86df65a168e2bba
https://doi.org/10.1063/1.1557340
https://doi.org/10.1063/1.1557340
Autor:
Thomas L. Carroll, F. J. Rachford
Publikováno v:
Radar Sensor Technology XVI.
We have developed a method for radar/sonar target discrimination employing techniques from non-linear dynamics. We demonstrate our method by simulating radar scattering from four similar targets where the radar wavelength and bandwidth resolution is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::302545f3ff42e6c8f736acea539c147d
https://doi.org/10.1117/12.918258
https://doi.org/10.1117/12.918258
Publikováno v:
Journal of Applied Physics. 75:4103-4108
The surface impedance of bulk and thick film granular high temperature superconductors has been studied. The static magnetic field, temperature, and frequency dependence of the surface impedance have been analyzed in terms of the weakly coupled grain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf8dff3e332e6b722378b61b36b49573
https://doi.org/10.1063/1.355989
https://doi.org/10.1063/1.355989